Examples with BoundingBox org.apache.fontbox.util.BoundingBox used on opensource projects

Example 1 with BoundingBox

use of org.apache.fontbox.util.BoundingBox in project pdfbox by apache.

the class PDType3Font method generateBoundingBox.

private BoundingBox generateBoundingBox() {
    PDRectangle rect = getFontBBox();
    if (!isNonZeroBoundingBox(rect)) {
        // Plan B: get the max bounding box of the glyphs
        COSDictionary cp = getCharProcs();
        for (COSName name : cp.keySet()) {
            COSBase base = cp.getDictionaryObject(name);
            if (base instanceof COSStream) {
                PDType3CharProc charProc = new PDType3CharProc(this, (COSStream) base);
                try {
                    PDRectangle glyphBBox = charProc.getGlyphBBox();
                    if (glyphBBox == null) {
                        continue;
                    }
                    rect.setLowerLeftX(Math.min(rect.getLowerLeftX(), glyphBBox.getLowerLeftX()));
                    rect.setLowerLeftY(Math.min(rect.getLowerLeftY(), glyphBBox.getLowerLeftY()));
                    rect.setUpperRightX(Math.max(rect.getUpperRightX(), glyphBBox.getUpperRightX()));
                    rect.setUpperRightY(Math.max(rect.getUpperRightY(), glyphBBox.getUpperRightY()));
                } catch (IOException ex) {
                    // ignore
                    LOG.debug("error getting the glyph bounding box - font bounding box will be used", ex);
                }
            }
        }
    }
    return new BoundingBox(rect.getLowerLeftX(), rect.getLowerLeftY(), rect.getUpperRightX(), rect.getUpperRightY());
}

Example 2 with BoundingBox

use of org.apache.fontbox.util.BoundingBox in project pdfbox by apache.

the class LegacyPDFStreamEngine method showGlyph.

/**
 * This method was originally written by Ben Litchfield for PDFStreamEngine.
 */
@Override
protected void showGlyph(Matrix textRenderingMatrix, PDFont font, int code, String unicode, Vector displacement) throws IOException {
    // 
    // legacy calculations which were previously in PDFStreamEngine
    // 
    // DO NOT USE THIS CODE UNLESS YOU ARE WORKING WITH PDFTextStripper.
    // THIS CODE IS DELIBERATELY INCORRECT
    // 
    PDGraphicsState state = getGraphicsState();
    Matrix ctm = state.getCurrentTransformationMatrix();
    float fontSize = state.getTextState().getFontSize();
    float horizontalScaling = state.getTextState().getHorizontalScaling() / 100f;
    Matrix textMatrix = getTextMatrix();
    BoundingBox bbox = font.getBoundingBox();
    if (bbox.getLowerLeftY() < Short.MIN_VALUE) {
        // PDFBOX-2158 and PDFBOX-3130
        // files by Salmat eSolutions / ClibPDF Library
        bbox.setLowerLeftY(-(bbox.getLowerLeftY() + 65536));
    }
    // 1/2 the bbox is used as the height todo: why?
    float glyphHeight = bbox.getHeight() / 2;
    // sometimes the bbox has very high values, but CapHeight is OK
    PDFontDescriptor fontDescriptor = font.getFontDescriptor();
    if (fontDescriptor != null) {
        float capHeight = fontDescriptor.getCapHeight();
        if (Float.compare(capHeight, 0) != 0 && (capHeight < glyphHeight || Float.compare(glyphHeight, 0) == 0)) {
            glyphHeight = capHeight;
        }
    }
    // transformPoint from glyph space -> text space
    float height;
    if (font instanceof PDType3Font) {
        height = font.getFontMatrix().transformPoint(0, glyphHeight).y;
    } else {
        height = glyphHeight / 1000;
    }
    float displacementX = displacement.getX();
    // calculate our own
    if (font.isVertical()) {
        displacementX = font.getWidth(code) / 1000;
        // there may be an additional scaling factor for true type fonts
        TrueTypeFont ttf = null;
        if (font instanceof PDTrueTypeFont) {
            ttf = ((PDTrueTypeFont) font).getTrueTypeFont();
        } else if (font instanceof PDType0Font) {
            PDCIDFont cidFont = ((PDType0Font) font).getDescendantFont();
            if (cidFont instanceof PDCIDFontType2) {
                ttf = ((PDCIDFontType2) cidFont).getTrueTypeFont();
            }
        }
        if (ttf != null && ttf.getUnitsPerEm() != 1000) {
            displacementX *= 1000f / ttf.getUnitsPerEm();
        }
    }
    // 
    // legacy calculations which were previously in PDFStreamEngine
    // 
    // DO NOT USE THIS CODE UNLESS YOU ARE WORKING WITH PDFTextStripper.
    // THIS CODE IS DELIBERATELY INCORRECT
    // 
    // (modified) combined displacement, this is calculated *without* taking the character
    // spacing and word spacing into account, due to legacy code in TextStripper
    float tx = displacementX * fontSize * horizontalScaling;
    float ty = displacement.getY() * fontSize;
    // (modified) combined displacement matrix
    Matrix td = Matrix.getTranslateInstance(tx, ty);
    // (modified) text rendering matrix
    // text space -> device space
    Matrix nextTextRenderingMatrix = td.multiply(textMatrix).multiply(ctm);
    float nextX = nextTextRenderingMatrix.getTranslateX();
    float nextY = nextTextRenderingMatrix.getTranslateY();
    // (modified) width and height calculations
    float dxDisplay = nextX - textRenderingMatrix.getTranslateX();
    float dyDisplay = height * textRenderingMatrix.getScalingFactorY();
    // 
    // start of the original method
    // 
    // Note on variable names. There are three different units being used in this code.
    // Character sizes are given in glyph units, text locations are initially given in text
    // units, and we want to save the data in display units. The variable names should end with
    // Text or Disp to represent if the values are in text or disp units (no glyph units are
    // saved).
    float glyphSpaceToTextSpaceFactor = 1 / 1000f;
    if (font instanceof PDType3Font) {
        glyphSpaceToTextSpaceFactor = font.getFontMatrix().getScaleX();
    }
    float spaceWidthText = 0;
    try {
        // to avoid crash as described in PDFBOX-614, see what the space displacement should be
        spaceWidthText = font.getSpaceWidth() * glyphSpaceToTextSpaceFactor;
    } catch (Exception exception) {
        LOG.warn(exception, exception);
    }
    if (Float.compare(spaceWidthText, 0) == 0) {
        spaceWidthText = font.getAverageFontWidth() * glyphSpaceToTextSpaceFactor;
        // the average space width appears to be higher than necessary so make it smaller
        spaceWidthText *= .80f;
    }
    if (Float.compare(spaceWidthText, 0) == 0) {
        // if could not find font, use a generic value
        spaceWidthText = 1.0f;
    }
    // the space width has to be transformed into display units
    float spaceWidthDisplay = spaceWidthText * textRenderingMatrix.getScalingFactorX();
    // use our additional glyph list for Unicode mapping
    unicode = font.toUnicode(code, glyphList);
    // this, which is why we leave it until this point in PDFTextStreamEngine.
    if (unicode == null) {
        if (font instanceof PDSimpleFont) {
            char c = (char) code;
            unicode = new String(new char[] { c });
        } else {
            // skips them. See the "allah2.pdf" TestTextStripper file.
            return;
        }
    }
    // adjust for cropbox if needed
    Matrix translatedTextRenderingMatrix;
    if (translateMatrix == null) {
        translatedTextRenderingMatrix = textRenderingMatrix;
    } else {
        translatedTextRenderingMatrix = Matrix.concatenate(translateMatrix, textRenderingMatrix);
        nextX -= pageSize.getLowerLeftX();
        nextY -= pageSize.getLowerLeftY();
    }
    processTextPosition(new TextPosition(pageRotation, pageSize.getWidth(), pageSize.getHeight(), translatedTextRenderingMatrix, nextX, nextY, Math.abs(dyDisplay), dxDisplay, Math.abs(spaceWidthDisplay), unicode, new int[] { code }, font, fontSize, (int) (fontSize * textMatrix.getScalingFactorX())));
}

Example 3 with BoundingBox

use of org.apache.fontbox.util.BoundingBox in project pdfbox by apache.

the class PreflightType3Stream method processOperator.

/**
 * This is used to handle an operation.
 *
 * @param operator
 *            The operation to perform.
 * @param operands
 *            The list of arguments.
 *
 * @throws IOException
 *             If there is an error processing the operation.
 */
@Override
protected void processOperator(Operator operator, List<COSBase> operands) throws IOException {
    super.processOperator(operator, operands);
    String operation = operator.getName();
    if (operation.equals("BI")) {
        image = new PDInlineImage(operator.getImageParameters(), operator.getImageData(), getResources());
        validateInlineImageFilter(operator);
        validateInlineImageColorSpace(operator);
    }
    if (operation.equals("d0")) {
        checkType3FirstOperator(operands);
    } else if (operation.equals("d1")) {
        COSNumber llx = (COSNumber) operands.get(2);
        COSNumber lly = (COSNumber) operands.get(3);
        COSNumber urx = (COSNumber) operands.get(4);
        COSNumber ury = (COSNumber) operands.get(5);
        box = new BoundingBox();
        box.setLowerLeftX(llx.floatValue());
        box.setLowerLeftY(lly.floatValue());
        box.setUpperRightX(urx.floatValue());
        box.setUpperRightY(ury.floatValue());
        checkType3FirstOperator(operands);
    }
    checkColorOperators(operation);
    validateRenderingIntent(operator, operands);
    checkSetColorSpaceOperators(operator, operands);
    validateNumberOfGraphicStates(operator);
    firstOperator = false;
}

Example 4 with BoundingBox

use of org.apache.fontbox.util.BoundingBox in project pdfbox by apache.

the class DrawPrintTextLocations method writeString.

/**
 * Override the default functionality of PDFTextStripper.
 */
@Override
protected void writeString(String string, List<TextPosition> textPositions) throws IOException {
    for (TextPosition text : textPositions) {
        System.out.println("String[" + text.getXDirAdj() + "," + text.getYDirAdj() + " fs=" + text.getFontSize() + " xscale=" + text.getXScale() + " height=" + text.getHeightDir() + " space=" + text.getWidthOfSpace() + " width=" + text.getWidthDirAdj() + "]" + text.getUnicode());
        // glyph space -> user space
        // note: text.getTextMatrix() is *not* the Text Matrix, it's the Text Rendering Matrix
        AffineTransform at = text.getTextMatrix().createAffineTransform();
        // in red:
        // show rectangles with the "height" (not a real height, but used for text extraction
        // heuristics, it is 1/2 of the bounding box height and starts at y=0)
        Rectangle2D.Float rect = new Rectangle2D.Float(0, 0, text.getWidthDirAdj() / text.getTextMatrix().getScalingFactorX(), text.getHeightDir() / text.getTextMatrix().getScalingFactorY());
        Shape s = at.createTransformedShape(rect);
        s = flipAT.createTransformedShape(s);
        s = rotateAT.createTransformedShape(s);
        g2d.setColor(Color.red);
        g2d.draw(s);
        // in blue:
        // show rectangle with the real vertical bounds, based on the font bounding box y values
        // usually, the height is identical to what you see when marking text in Adobe Reader
        PDFont font = text.getFont();
        BoundingBox bbox = font.getBoundingBox();
        // advance width, bbox height (glyph space)
        // todo: should iterate all chars
        float xadvance = font.getWidth(text.getCharacterCodes()[0]);
        rect = new Rectangle2D.Float(0, bbox.getLowerLeftY(), xadvance, bbox.getHeight());
        if (font instanceof PDType3Font) {
            // bbox and font matrix are unscaled
            at.concatenate(font.getFontMatrix().createAffineTransform());
        } else {
            // bbox and font matrix are already scaled to 1000
            at.scale(1 / 1000f, 1 / 1000f);
        }
        s = at.createTransformedShape(rect);
        s = flipAT.createTransformedShape(s);
        s = rotateAT.createTransformedShape(s);
        g2d.setColor(Color.blue);
        g2d.draw(s);
    }
}

Example 5 with BoundingBox

use of org.apache.fontbox.util.BoundingBox in project pdfbox by apache.

the class AFMParser method parseCharMetric.

/**
 * This will parse a single CharMetric object from the stream.
 *
 * @return The next char metric in the stream.
 *
 * @throws IOException If there is an error reading from the stream.
 */
private CharMetric parseCharMetric() throws IOException {
    CharMetric charMetric = new CharMetric();
    String metrics = readLine();
    StringTokenizer metricsTokenizer = new StringTokenizer(metrics);
    try {
        while (metricsTokenizer.hasMoreTokens()) {
            String nextCommand = metricsTokenizer.nextToken();
            switch(nextCommand) {
                case CHARMETRICS_C:
                    String charCodeC = metricsTokenizer.nextToken();
                    charMetric.setCharacterCode(Integer.parseInt(charCodeC));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_CH:
                    // Is the hex string <FF> or FF, the spec is a little
                    // unclear, wait and see if it breaks anything.
                    String charCodeCH = metricsTokenizer.nextToken();
                    charMetric.setCharacterCode(Integer.parseInt(charCodeCH, BITS_IN_HEX));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_WX:
                    charMetric.setWx(Float.parseFloat(metricsTokenizer.nextToken()));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_W0X:
                    charMetric.setW0x(Float.parseFloat(metricsTokenizer.nextToken()));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_W1X:
                    charMetric.setW1x(Float.parseFloat(metricsTokenizer.nextToken()));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_WY:
                    charMetric.setWy(Float.parseFloat(metricsTokenizer.nextToken()));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_W0Y:
                    charMetric.setW0y(Float.parseFloat(metricsTokenizer.nextToken()));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_W1Y:
                    charMetric.setW1y(Float.parseFloat(metricsTokenizer.nextToken()));
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_W:
                    float[] w = new float[2];
                    w[0] = Float.parseFloat(metricsTokenizer.nextToken());
                    w[1] = Float.parseFloat(metricsTokenizer.nextToken());
                    charMetric.setW(w);
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_W0:
                    float[] w0 = new float[2];
                    w0[0] = Float.parseFloat(metricsTokenizer.nextToken());
                    w0[1] = Float.parseFloat(metricsTokenizer.nextToken());
                    charMetric.setW0(w0);
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_W1:
                    float[] w1 = new float[2];
                    w1[0] = Float.parseFloat(metricsTokenizer.nextToken());
                    w1[1] = Float.parseFloat(metricsTokenizer.nextToken());
                    charMetric.setW1(w1);
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_VV:
                    float[] vv = new float[2];
                    vv[0] = Float.parseFloat(metricsTokenizer.nextToken());
                    vv[1] = Float.parseFloat(metricsTokenizer.nextToken());
                    charMetric.setVv(vv);
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_N:
                    charMetric.setName(metricsTokenizer.nextToken());
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_B:
                    BoundingBox box = new BoundingBox();
                    box.setLowerLeftX(Float.parseFloat(metricsTokenizer.nextToken()));
                    box.setLowerLeftY(Float.parseFloat(metricsTokenizer.nextToken()));
                    box.setUpperRightX(Float.parseFloat(metricsTokenizer.nextToken()));
                    box.setUpperRightY(Float.parseFloat(metricsTokenizer.nextToken()));
                    charMetric.setBoundingBox(box);
                    verifySemicolon(metricsTokenizer);
                    break;
                case CHARMETRICS_L:
                    Ligature lig = new Ligature();
                    lig.setSuccessor(metricsTokenizer.nextToken());
                    lig.setLigature(metricsTokenizer.nextToken());
                    charMetric.addLigature(lig);
                    verifySemicolon(metricsTokenizer);
                    break;
                default:
                    throw new IOException("Unknown CharMetrics command '" + nextCommand + "'");
            }
        }
    } catch (NumberFormatException e) {
        throw new IOException("Error: Corrupt AFM document:" + e);
    }
    return charMetric;
}